Lund, Jane; Riegel, Walter (1984): Maceral distribution, stratigraphic position and vitrinite reflectance at DSDP Hole 81-555 [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.806668, Supplement to: Lund, J; Riegel, W (1984): Petrography of degraded plant fragments from Paleocene-Eocene sediments of Deep Sea Drilling Project Leg 81, Site 555, Rockall Plateau. In: Roberts, DG; Schnittker, D; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 81, 623-629, https://doi.org/10.2973/dsdp.proc.81.118.1984
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Abstract:
Twenty-four sediment samples from late Paleocene to early Eocene were studied for maceral content, vitrinite reflectance, and spectral fluorescence in order to determine some parameters of the origin and diagenetic history of their organic fraction. The sediments had been obtained at Site 555 of DSDP Leg 81 in the northeastern North Atlantic. The bulk of the microscopically visible fraction is made up of humic materials; inertinites follow as a distant second; and liptinites are exceedingly rare. No unequivocal evidence of marine organic matter was found. Humic materials are highly decomposed, showing signs of aerobic (frequency of sclerotinites) as well as anaerobic (abundance of and intimate association with framboidal pyrite) microbial degradation. Vitrinite reflectance values vary between 0.26 and 0.35 Ro and show a slight increase with depth. These values, indicative of a low-rank lignite stage of coalification, contrast somewhat with the sporinite fluorescence spectra, which show the configuration typical for the peat stage. In either case, the evidence for such a low stage of coalification is surprising in view of the depth and age of the sediments.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Latitude: 56.561700 * Longitude: -20.782200
Date/Time Start: 1981-08-31T00:00:00 * Date/Time End: 1981-08-31T00:00:00
Event(s):
81-555 * Latitude: 56.561700 * Longitude: -20.782200 * Date/Time: 1981-08-31T00:00:00 * Elevation: -1659.0 m * Penetration: 964 m * Recovery: 505.5 m * Location: North Atlantic/PLATEAU * Campaign: Leg81 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 96 cores; 907 m cored; 9.5 m drilled; 55.7 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
3 datasets
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Datasets listed in this publication series
- Lund, J; Riegel, W (1984): (Table 2) Stratigraphic position of sections studied and vitrinite reflectance at DSDP Hole 81-555. https://doi.org/10.1594/PANGAEA.806666
- Lund, J; Riegel, W (1984): (Table 1) Maceral distribution of two organic-rich sections at DSDP Hole 81-555. https://doi.org/10.1594/PANGAEA.806665
- Lund, J; Riegel, W (1984): (Table 3) Vitrinite reflectance at DSDP Hole 81-555. https://doi.org/10.1594/PANGAEA.806667